The United States national debt has surpassed $40 trillion for the first time, signifying another historic milestone in the federal government’s rapidly growing financial obligations.
Treasury Department figures showed total public debt outstanding hitting roughly $40.047 trillion, according to data reported Wednesday.
That total consists of about $32.266 trillion in debt held by the public and approximately $7.782 trillion in intragovernmental holdings.
The milestone arrives less than five months after the country’s debt reached $39 trillion.
U.S. Debt Has More Than Doubled in Less Than a Decade
America’s debt burden has expanded dramatically over the last decade.
Total federal debt stood at approximately $19.95 trillion when Donald Trump began his first term as president in January 2017. It has now more than doubled.
Part of the increase came from extraordinary borrowing during the COVID-19 pandemic under both Trump and former President Joe Biden. Long-term structural problems—including chronic budget deficits, tax policy and rising spending on major federal programs—have also contributed.
Reuters calculates that the debt increased by about $8.4 trillion during Biden’s four years in office and has risen by a combined $11.6 trillion across Trump’s two terms so far.
Interest on the Debt Is Becoming a Major Federal Expense
The size of the debt is only part of the problem.
The government must also pay interest on the money it borrows, and those costs become more expensive when interest rates remain elevated.
Federal interest expenses are now running at roughly $1.1 trillion, according to Reuters. During the first 10 months of the 2026 fiscal year, interest costs surpassed Medicare spending and became the government’s second-largest budget category behind Social Security.
That means an increasing portion of federal revenue must be used simply to service debt accumulated in previous years.
July Produced Another Massive Federal Deficit
The federal government recorded a $432 billion budget deficit in July, one of the largest monthly gaps in U.S. history.
Spending on programs including Social Security and Medicare continues to rise as America’s population ages.
At the same time, the government faces the long-running political difficulty of bringing spending and tax revenue into closer alignment.
Budget watchdogs have repeatedly warned that neither major political party has produced a complete solution capable of stabilizing the debt over the long term.
Higher Debt Can Eventually Reach Household Finances
The $40 trillion figure may seem abstract, but borrowing costs in the Treasury market have implications throughout the economy.
Higher long-term Treasury yields may contribute to more expensive mortgages, auto loans and commercial borrowing.
Treasury Secretary Scott Bessent declared an increase in government buybacks of longer-term Treasury securities Wednesday as long-bond yields faced renewed pressure.
Trump, meanwhile, said he was not worried about bond-market volatility and again argued that U.S. interest rates should be lower.
With the national debt now past $40 trillion, the question increasingly facing Washington is no longer whether another milestone will arrive, but how quickly.
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